CFETR ECRH系统发射天线的初步结构设计与分析  

Preliminary structure design and analysis of CFETR ECRH system launcher

作　　者：张立元 王晓洁 吴大俊 汤允迎 王瀚林 刘甫坤 ZHANG Li-yuan;WANG Xiao-jie;WU Da-jun;TANG Yun-ying;WANG Han-lin;LIU Fu-kun(Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031;University of Science and Technology of China,Hefei 230026)

机构地区：[1]中国科学院等离子体物理研究所,合肥230031 [2]中国科学技术大学,合肥230026

出　　处：《核聚变与等离子体物理》2024年第3期267-274,共8页Nuclear Fusion and Plasma Physics

基　　金：国家重点研发计划项目(2017YFE0300503)。

摘　　要：电子回旋共振加热(ECRH)是中国聚变工程实验堆(CFETR)实现科学目标必不可少的辅助加热和电流驱动方式。发射天线是电子回旋共振加热系统的核心部件之一。为获得等离子体最佳的电流驱动效率,从发射天线的总体方案、波束的传输、波束的汇聚与发射、中子屏蔽、维护方案等方面对ECRH系统顶部发射天线的初步结构进行了设计。ECCD发射天线通过多波束汇聚方式,在CFETR装置紧凑的顶部颈管内,实现了2组9波束微波功率注入至等离子体共振层。发射天线采用颈管插塞式结构设计,有利于中子屏蔽设计和遥操作维护。通过流-热-固耦合仿真分析,为天线发射镜设计了有效的主动冷却方案。本文的分析和设计,为ECRH发射天线进一步的详细工程设计奠定了基础。The electron cyclotron resonance heating(ECRH)is an essential auxiliary heating and current driving method for the Chinese Fusion Engineering Testing Reactor(CFETR)to achieve scientific mission.The launcher is one of the core components of the ECRH system.In order to obtain the optimal current drive efficiency of the plasma,the preliminary structure design of ECCD system upper launchers is carried out from five aspects:overall layout,propagation of beam,convergence and launch of beams,neutron shielding,and maintenance scheme.A method of multibeam convergence is adopted for the ECCD launcher,and therefore two sets of 9-beam microwave powers inject into the resonance layer of the plasma through the compact upper port of the CFETR.Using a port-plug structure for the launcher design is beneficial to neutron shield and remote handing maintenance.The effective active cooling schemes for the launcher mirror have been designed via fluid-thermal-solid coupling simulation.The above analysis and design lay a foundation for the further detailed engineering design of ECRH launchers.

关 键 词：CFETR ECRH 发射天线 多波束汇聚 流-热-固耦合仿真分析 

分 类 号：TL624[核科学技术—核技术及应用]